Pumping and lubricating apparatus



June 3, 1930. R NEWHOU E 1,761,579

PUMPING AND LUBRICATING APPARATUS Filgd March 2'7, 1926 2 Sheets-Sheet 1 June 3, 1930. c, EwHousE 1,761,579

PUMPING AND LUBRICATING APPARATUS Filed March 27, 1926 2 Sheets-Sheet 2 Patented June 3, 1930 UNITED STATES PATENT OFFICE RAY C. NEWHOUSE, OF CHICAGO, ILLINOIS, ASSIGNOR TO ALLIS-CHALMERS MANUFAC- TURING COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE PUMPING AND LUBRICATING APPARATUS Application filed March 27, 1926. Serial No. 98,048.

This invention relates to pumping apparatus and more particularly such apparatus when applied in the lubricating of vertical shaft machines, for example, crushing machines and gyratory crushers.

One of the objects of the invention is to provide a simple and reliable form of pump and more specifically one in which fiuld is pumped in a plurality ofstages.

Another object is to provide a simple and efficient lubricating system for machines as hereinbefore mentioned and more specifically one in which the parts are all easily accessible; and in which no piping for carrying circulating lubricating fluid externally to the machine is needed.

Other objects will appear hereinafter as the description proceeds.

The novel features of the invention will appear from this specification and the accompanying drawings forming a part thereof and disclosing one embodiment of the in vention, and all of these novel features are intended to be pointed out in the claims.

In the drawings Fig 1 is a longitudinal section showing how the invention may be applied in a gyratory crusher, some of the parts being shown more or less diagrammatically.

Fig. 2 is an enlarged detail view of a portion of the apparatus of Fig. 1.

Fig. 3 is a plan View of a pump housing such as may be used in the machine illustrated in Figs. 1 and 2.

Fig. 4 is a sectional view of the pump housing taken along the line IV-IV, lookin in the direction of the arrows.

ig. 5 is a plan view of a diffuser which may form a part of the pump.

Fig. 6 is a side elevation of the diffuser shown in Fig. 5.

Fig. 7 is a fragmentary section taken along the line VII-VII of Fig. 5.

Fig. 8 is a plan View of a second stage impeller of the pump.

Fig 9 is a sectional view of the second stage impeller taken along the line IX-IX in Fig. 8, looking in the direction of the arrows. v

Fig. 10 is a fragmentary sectional view of a portion of the second stage impeller taken along the line XX of Fig. 8 looking in the direction of the arrows.

The invention has been shown as applied in a gyratory crusher provided with a shaft 1 carrying the usual head cooperating with concaves. The crusher is here shown as provided with a bottom shell 2. The shaft 1 is gyrated by means of a suitably driven eccentric 3 the outer bearing surface of which cooperates with a bushing or bearing 4. The eccentric 3 may be driven by means of a gear wheel 5 suitably fastened to the eccentric. The gear wheel 5 is provided with a sustaining or thrust bearing comprising an upper wearing ring 6 suitably fastened to the gear .wheel, which wearing ring is adapted to cooperate with a lower wearing ring 7 carried by a member 9, here shown as an annular flanged extension on a bottom plate 8 which may be in turn carried by the bottom shell 2 of the crusher.

Referring now more particularly to Fig. 2, the bottom plate 8 may be provided with radial ribs 11 in which may be provided holes 12 affording free passage of lubricating fluid between opposite sides of the ribs. The member 9 is also provided with one or more radial holes 10 affording communication between oil contained radially outside of the member 9 and oil radially within the member. The lower part of the gear wheel 5 is here shown as having fitted thereto a housing 13 which has an axially extending portion 14' and a radially extending portion 15. Resting upon the radially extending portion is a diffuser or intermediate member 16 and mediately resting on the diffuser is an impeller member 17 provided with a key 18 having a sliding fit with a slot in the housing 18 The lower face of the impeller member 17 has fastened thereto a cover plate 19 provided with a circular hole 20.

Referring now to Fig. 3 which shows a plan View of the pump housing 13, it will be noted that the radially extending portion of this housing is provided with one or more channels or passages 21 which may extend in a substantially radial direction and communicate at the radially inner end with an annular channel 23. The pump housing is therefore formed to act as an impeller as will appear hereinafter. A slot 24 is adapted to cooperate with the key 18 hereinbefore mentioned.

Referring now to Fig. 5 it will be noted that the diffuser or intermediate member 16 is preferably so formed as to provide portions 25, 26 giving an outside diameter substantially the same as the inside diameter of the axially extending portion 14 of the pump housing. The portions 27, 28 extending at right angles to the portions 25, 26 are made of smaller diameters. The places where the portions 27, 28 meet the portions 25, 26 serve as entrances to one or more channels in the upper face of the diffuser 16. There are here shown 4 channels 29, 30, 31, 32. The bottoms of the channels at the peripheral entrances thereto may be bevelled off as shown at 33. A more or less cylindrical projection 34 is provided at the center of the diffuser 16, extending upward as shown in Fig. 6 and forms with the radially inner ends of the channels 29 to 31, a substantially annular chamber.

Referring now to Fig. 8, the second stage impeller 17 is formed to act as such by reason of one or more channels 37, which as may be seen from Fig. 9, are formed in the underside, as Viewed in this figure, of the :member 17. The radially outer end of a channel 37 comunicates with an opening 38 which passes clear through the member 17 and communicates with a channel comprising bevels 39, 40 extending downwards as viewed in Fig. 10 toward the opening 38 and the end of channel 37.

The bottom plate 8 is here shown as having fitted thereto a cover plate 41 which may be provided if desired with a drain pipe and valve 42. One or more radial ribs 43 on the cover plate 41 serve to prevent rotation of the diffuser member 16 by cooperation with one or more radial extensions 44 on the diffuser member 16.

A pipe 45 communicating with the oil well formed by the bottom plate 8 and the cover plate 41 may be provided for the purpose of filling the well to the level of the pet cock 46, which latter may serve as an indicator for the oil level.

If desired a cooling coil 47 may be provided for the oil, and is here shown as resting on and fastened to the radial ribs 11. The cooling coil is not part of the present invention.

The operation of the pump and lubricating system in which it is here shown as embodied is as follows:

As the gear wheel 5 rotates it also rotates the pump housing 13 and along with it the second stage impeller member 17 by reason of the key connection 18. The channels and passages in the pump housing being entirely filled with oil it follows that as the pump housing is rotating in a clockwise direction as viewed in Fig. 3, the side 48, for example, of a channel 21 will cause the oil to rotate and force the same outwardly, the channel or channels 21 thus serving as impeller vanes. hen the oil reaches the annular channel 23 (Fig. 4) it is caused to enter the channels 29 and 30 of the diffuser 16 which member serves to bring the oil, which is now under pressure, to the annular channel in the diffuser. The channel 35 is in communication, through the hole 20 in the cover plate 19 of the second stage impeller 17, with the radially inner end or ends of the channel or channels such as 37 in the second stage impeller member 17. 'As this member is also being rotated by the pump housing it will be clear that a channel such as 37 will in a manner as already described in connection with the channel 21, place the oil under further pressure and cause it to move outwardly to the opening 38 and through this opening into the chamber formed at the end of the shaft 1 by the pump housing 13. The oil in this chamber being under pressure it passes upwardly between the shaft 1 and the inner bearing surface of the eccentric 3 and flows over the top of the eccentric or through a port 49 to the outer bearing surface of the eccentric and between it and the bearing 4 downwardly to the inside of gear wheel 5. This wheel whirls the oil and causes it to move outwardly over the top of the wheel from where it flows downward over the cooling coil 47 and from there through the opening 10. From there it is again taken through the opening 22 in the pump housing and, as previously described, placed under pressure in two stages and again circulated through the crusher bearings.

If the pump housing is rotated in a counterclockwise direction the channels 31, 32 in the diffuser 16 will serve to return the fluid pumped in the first stage impeller 15, to the inner radius of the second stage impeller 17. v

It is of course clear that the particular mode of and paths of circulation of the oil as it leaves the two stage pump is not material as far as the pump itself is concerned.

It is claimed and desired to secure by Letters Patent:

1. In combination, a pump including a housing, means for rotating said housing on a substantially vertical axis, two sets of axially spaced impeller means movable with said housing, an intermediate member disposed to be in contact with and supported freely by one of said impeller means and provided with means for conveying fluid pumped by one of said sets to the inlet of the other set, and means for preventing motion about said axis of said intermediate member.

2. In combination, a shaft, means forming an apertured closure for the end of said shaft including a pump housing and means for rotating said housing, two sets of axially spaced impeller-means movable with said housing and a relatively stationary intermediate member provided with means for conveying fluid pumped by one of said sets to the inlet of the other set, the outermost periphery of said relatively stationary member having a substantially fluid tight rotating fit within the inner periphery of said housing.

3. In combination, a rotatably mounted housing having an axially extending portion and a radially extending portion with a substantially radial passage therein, and a relatively stationary member mounted within said housing to coaot with said radially extending portion, said relatively stationary member having a substantially radial passage therein communicating with an axial passage therein at the radially outermost portion thereof, said axial passage being disposed to coact with the radially outermost portion of said passage in said housing the outermost periphery of said relatively stationary member having a substantially fluid tight rotating fit with the inner periphery of said housing.

4. In combination, a rotatably mounted housing having an axially extending portion and a radially extending portion with a substantially radial passage therein, a relatively stationary member mounted within said housing to coact with said radially extending portion the adjacent faces of sald radially extending portion and of said relatively stationary member being in contact, said relatively stationary member having a substantially radial passage therein the radially outermost portion thereof being disposed to coact with the radially outermost portion of said passage in said housing, and a second member disposed within, separate form, and rotatable with said housing and mounted to coact with said relatively sta tionary member the adjacent faces of said second member and said relatively stationary member being in contact, said second member having a substantially radial passage therein the radially innermost portion thereof being disposed to coact with the. radially innermost portion of said passage in said rleatively stationary member.

5. In combination, a housing mounted for rotation around a substantially verticalaxis said housing having a substantially axially extending portion and a substantially radially extending portion said latter port on being provided with means operating through centrifugal forces generated by the rotation of said housing to cause fluid entering said housing to move radially outward, means including a relatively stationary member disposed within said housing and resting on said radially extending portion and provided with means for returning said fluid radially inward, and means including a rotatable member disposed within said housing and resting on said relatively stationary member and provided with means operating through centrifugal forces generated by the rotation of said member to cause said inwardly returned fluid to move radially outward.

6. A centrifugal pump comprising rotatable means adapted to induce centrifugal forces in the admitted fluid and discharge it from said rotatable means, and means for receiving the said discharged fluid and having a plurality of auxiliary discharge outlets communicating with a single main discharge outlet at least one of which auxiliary outlets is active and at least one other of which auxiliary outlets is substantially inactive for a given direction of rotation of said rotatable means, said first and second named auxiliary outlets being respectively substantially inactive and active for the opposite direction of rotation of said rotatable means.

7. A centrifugal pump comprising rotatable means adapted to induce centrifugal forces in the admitted fluid and discharge it from said rotatable means, means for receiving the said discharged fluid and having a plurality of auxiliary discharge outlets communicating with a single main discharge outlet at least one of which auxiliary outlets is active and at least one other of which auxiliary outlets is substantially inactive for a given direction of rotation of said rotatable means, said first and second named auxiliary outlets being respectively substantially inactive and active for the opposite direction of rotation of said rotatable means, and means whereby the quantity of fluid discharged from said active outlets is approximately the same irrespective of the direction of rotation of said rotatable means under otherwise similar conditions.

8. A centrifugal pump comprising a diffusing means provided with at least two inlet passages proceeding in different directions respectively with reference to the axis of the pump and leading to a common outlet, a rotatable means adapted to discharge therefrom the fluid admitted thereto into either one or the other of said passages depending'on the direction of rotation of said rotatable means.

9. A centrifugal pump comprising rotatable means having a substantially vertical axis adapted to discharge therefrom the admitted fluid with appreciable velocity, said rotatable means having face portions transverse to the axis of rotation, and diffusing means adapted to convert the energy of said fluid represented by said velocity into pressure, said diffusing means having face portions in contact With and supported by the face portions of said rotatable means.

In testimony whereof the signature of the inventor is aflixed hereto.

RAY O. NEVHOUSE. 

